I've attached a snap of the part I'm unable to understand Machinery's Handbook 29th Edition.
Here's a link to the ebook as well https://www.vtc1.org/cms/lib/PA03000913/Centricity/Domain/21/Machinerys%20Handbook%2029th%20Edition.pdf
I'm struggling to understand the relevance of this value Q that I arrive on. It gives me the minimum thread engagement length but doesn't factor in the load on the internal/external material.
So I get the thread engagement length from just the material properties.
What if I had the same materials and the bolt was only bearing a 0.5 N load, and my engagement was only 5 mm. Will the threads still strip? I think this recommended length has some other significance. But I need someone's help in understand that.